William kent



(No Model.)

W. KENT.

FURNACE.

No. 340,584. Patented Apr. 27, 1886;

N, PETERS. Pnowuiho n lm, Wilmington. DJ;

UNITED STATES PATENT OFFICE.

\VILLIAM KENT, OF JERSEY CITY, NEV JERSEY.

FURNACE.

LEPECIFICATION forming part of Letters Patent No. 340,584, dated April 27, 1886.

Application filed August 14,1885. Serial No. 174,401. (No model.)

To all whom it may concern.-

Be it known that I, XVILLIAM KENT, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Furnaces; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements in furnaces, but more especially to that class of furnaces employed in welding joints in sheet-metal construction, and has for -its object to provide a device of this description from which a flame of great intensity may be obtained, while at the same time the furnace shall be simple and portable; and with these ends in view my invention consists in the details of construction and combination of elements hereinafter fully explained, and then specifically designated by the claims.

In order that those skilled in the art to which my invention appertains may fully understand its construction and operation, I will describe the same in detail, referring by letter to the accompanying drawings, forming a part of this specification, in which- Figure l is a side elevation of my furnace, the inner tube and the top of the outer being shown in dotted lines; Fig. 2, a central longitudinal section, and Fig. 3 a cross-section.

Similar letters denote like parts in all the figures of the drawings.

A is a cylinder or tube of metal closed at either end, and provided with a row'of. perforations or a slot along its top throughout its entire length. Mounted upon the cylinder is a burner or plate, 13, of porcelain or other heat-resisting substance, conformed beneath in shape and secured to said cylinder. It is slotted longitudinally or perforated to correspond with the slot or perforations in cylinder A.

hydrogen or other inflammable gas. WVhere the great heat of the oxyhydrogen flame may be dispensed with and a heat of less intensity used, ordinary illuminating or natural gas may be supplied by one blower and atmospheric air by the other. Again, where there is an existing supply of gas and air under pressure in a tank or elsewhere, the blowers themselves may be dispensed with. I give rotary motion to the blowers by foot or other power. As the source is immaterial, I have not deemed it necessary to show it in the drawings.

- The operation of my invention is as follows: The gases or air and gas, as the case may be, are supplied to cylinder A and pipe 0, respectively, at a high pressure by the blowers. The gas fed to the inner tube passes through the perforations D, and mixes with the gas or air fed to cylinder A. Thus mixed, they issue through the slotin the cylinder, and are adapted to be lighted at the top of the fire-clay or porcelain burner. The flame thus generated is of a most intense character, and well adapted for welding purposes and processes akin thereto. In producing the flame by air and gas I am able to feed the air through either the inner or the outer pipe; but I prefer to introduce the air or gas which is at the higher pressure through the inner tube.

In my invention I do not wish to be confined to the exact position of the inner tube shown in the drawings, as some other arrangement (as, for instance, concentric with the cylinder) might be found to be more advantageous; neither do I desire to be limited to any particular device for supplying the gases at pressure, the gist of my invention resting in the broad idea of supplying the gases, under pressure, to a burner or furnace constructed of two tubes, one within the other, mixing the gases in the outer tube, and igniting the mixture at its point of issuance, in the manner hereinbefore set forth.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, in a furnace, of an outer tube slotted longitudinally, and having mounted thereon a correspondinglyslotted burner of fire-resisting material, with an inner tube having a longitudinal slot or series ICO of perforations, and a pair of blowers eontubes under pressure, as and for the purpose IO nected to said tubes, and adapted to supply specified.

gases or gas and air thereto, substantially as I11 testimony whereof I affix my signature in set forth. presence of two witnesses.

5 2. The combination of tubes A and 0 one T within the other, slotted longitudinally and WILLIAM RENT" in the same Vertical plane, the slotted burner \Vitnesses: mounted on tube A, and the blowers E F, S. S. XVILLIAMSON, adapted to supply combustible gases to said H, Ti, SIIEL'roN, J r 

